Tubular lock



Oct. 10, 1939. K. A. BRAUNING TUB ULAR LOCK Filed Feb. 20, 1935 7 Sheets-Sheet l JN VE l Yl//IIII TOR 14 TTORNEY Oct. 10, 1939 K. A. BRAUNING Filed Feb. 20, 1935 TUBULAR LOCK 7 Sheets-Sheet 2 A TTORNEY Oct. '10, 1939. K A, BRAUNlNG 2,175,791

TUBULAB LOCK Filed Feb. 20, 1935 7 Sheets-Sheet 3 A TTORNEY OctulO, 1939. K. A. BRAUNING 2,175,791

TUBULAR LOCK Filed Feb. 20, 1935 7 Sheets-Sheet 4 72 u ("5 3.61* /N VEA/jak u i; a0 BY ATTORNEY Oct. 10, 1939. K, A, BRAUNING 2,175,791

TUBULAR LOC K Filed Feb. 20, 1935 7 Sheets-Sheet 5 Illllllll! NVENTOR A TTORNE Y Oct. l0, 1939. K, A, BRAUNlNG 2,175,791

TUBULAH Loox Filed Feb. 20, 1935 7 sheets-sheet 6 /NI/ENTOR` A TTORNE Y Oct. 10, 1939. K, A BRAUN|NG 2,175,791

TUBULAR LOCK Filed Feb. 20, 1935 7 Sheets-Sheet 7 A TTORNEY Patented Oct. 10, 1939 UNITED STATES PATENT 'OFFICE TUBULAR LOCK Application' February 2o, 1935, serian No. 7,403

14 Claims.

- This invention relates to locks of the tubular type. More especially, this invention relates to a lock having a mechanical construction especially adapted for use in a tubular lock of the type inserted in a door by the joining of a. spindle portion with a latch operating portion, the spindle portion" being'inserted through a transverse hole in the door, while the latch portion is inserted in a hole running inwardly from the edge of the door. While I shall describe the invention with relation to a tubular lock, it will of course be -`readily appreciated that many of its features may be utilized in locks other than those of the tubular type.

. 1I f One of theimportant 'features in a lock of the type to be described is that of an adjustable backset. My invention provides a readily adjustable backset which may be obtained by very simple means. More particularly, the backset arrangement I have devised utilizes a bolt having a rollback operated portion which is adjustable relatively to the main bolt body. Even more particularly, I utilize a rollback portion whichjis slidable relatively to the main bolt body and is u adjustable by means of a screw joining the two parts.

My invention also provides a very novel latch bolt assembly and a latch deadlocking means. More particularly, I provide a tubular latch bolt 3 housing having an end plate which is held in position by a spring tending to project the bolt mountedin the housing. This same end plate supports a deadlocking lever which is preferably actuated by the boltl projecting spring. The

35 latch bolt retracting means is adapted to retract the latch bolt against its spring and while doing so, moves the deadlocking lever against the pressure of the same spring and out of deadlocking relation to the latch bolt nose.

40 A further feature of my invention resides in the rather unique method I employ for joining the outside andl inside knobs and roses and for maintaining the knobs and spindle in assembled relation to the door, and for providing easy and 45 fast assembly. More particularly, I utilize an inner plate which maintains the outside rose and knob in position and which is adapted to be joined to the inner rose through a bayonet joint connection, this bayonet joint connection being prefer- 50 ably releasable upon the depression of a spring vention, the .spindle is hollow, and there is adapted to be maintained in the spindle an outside knob controlling member actuated by an inside finger piece. Naturally, I maintain the inside finger piece centrally relatively to the inner knob 5 but I may mount it otherwise should I be inclined to do so. Preferably, also, the spindle is in the form of a hollow sleeve keyed to the inner knob, while the outside knob controlling piece is a member slidable within the hollow spindle and is l0 adapted to actuate a clutch mechanism to disconnect and connect the outside knob relatively to the spindle. l

In combination with this spindle and controlling mechanism, I utilize an outside knob having 16 a pin tumbler cylinder, although other locking mechanisms may be utilized, which pin tumbler cylinder has a cam member adapted to rotate the spindle.` 'Ihis cam member, in the preferred embodiment of my invention, is so related to 20 the spindle that the outside knob and its cylinder, if forcefully rotated, would do so without exerting any pressure on the spindle tending to rotate the spindle. The cam member is, in my preferred form, movable axially to engage the spindle and may then be made to rotate the spindle. This movement, incidentalljnin no way affects the mechanism previously pointed out as adapted to lock the outside knob against operating the spindle, so that the key operation is I0 independent of the outside knob, and when completed, the outside knob remains in its locked position.

Also, the sliding control member for the outside knob normally rotates With the spindle and 85 the inner knob so as not to be affected by the normal operation of the inner knob, once the control member is particularly positioned by its finger piece.

In the preferred embodiment of my invention, I utilize rather novel means for not only releasing the outside knob from the spindle so that rotation thereof may not rotate the spindle, but I also arrange for the same means to deadlock the outside knob relatively to its rose.

An important feature of my invention relates to the method of maintaining the cylinder in the outside knob. I so mount the cylinder that it is readily removable by predetermined movement of its key plug Without the use of any tools or other means. While removable cylinders and plugs are well-known in this art, I believe that I have invented a really unique combination operable along the lines indicated. In broad terms, the retaining means for my cylinder are revention, I utilize means operated by the force exerted against the cam toiactuate the cylinder. retaining means. More in detail, in order to remove my pin tumbler cylinder, I rotate the inner knob relatively to the outside knob so that the cylinder cam may no longer engage the spindle. Therefore, when the key plug is rotated in a manner tendingto move the cam into spindle engaging position, and the cam is prevented from this movement, the force between the cylinder and the cam will tend to move the cam actuating means rearwardly because of the inability of the cam to move, and this rearward movement will operate to release the cylinder retaining means. The cylinder retaining means act also to maintain the cylinder against rattling in the knob by absorbing the play between the cylinder and knob.

I have gone into the general operation of the invention in some detail and I Yhave explained in some dtaii also the features of the invention and the mechanical principles employed.

. I have done this to indicate broadly the results I obtain because while I wish to describe hereinaiter a particular modication of my invention, I do not wish to be limited to that modii'ication; rather, I am claiming a monopoly which is broadly outlined i'n the claims appended hereto.

For a detaile'd description of my invention, I shall now refer to the drawings wherein Fig. 1 is a plan view of the lock of my invention shown separate from the door but with its parts in normal assembled relation. Fig. 2 is an end view of Fig. 1, looking at the inside knob, while Fig. 3 is a similar view looking at the outside knob. Fig. 4 shows an end view of thelatch assembly and Fig. 5 shows the coaction of this unit with a strike. Fig. 6 is a sectional view of my lock taken substantially centrally thereof and just slightly in front of the spindle. Fig. '1 is a section along lines 1--1 of Fig. 6. Figs. 8 and 9 are views of the latch assembly unit and rollback taken along lines 8 8 of Fig. 6 and showing the latch bolt projected and retracted, respectively.

Fig. 10 is a partial section taken on the side opposite Fig. 8 and shows the backset adjusting means and the latch bolt and its deadlocking member. Fig. 1l is a partial section'at right angles to Fig. 10. Fig. 12 is a view of the latch bolt body while Fig. 13 is a section thereof along lines I3--I3. Figs. 14 and 15 are respectively side and end' views of the deadlocking lever, while Figs. 16 and 17 are side and end views of the auxiliary latch mechanism.

Figs. 18 and 19 are respectively end and side views of part of the outside knob control mechanism which is actuated by the inside iinger piece. Figs. 20 and 21 show side and end views of the other half of the outside knob controlling mechanism. Fig. 22 is an assembly of the parts of Figs. 23 and 24 are respectively tion to the rose. Figs. 29, 30, and 31 are respecl tively front, side, and rear views of the outside knob. Fig. 32 is a view along the section lines Fig. 42 illustrates a spring used with the latch` member. Fig. 43 shows a spring retainer utilized for maintaining the thumb piece in the inside knob. Fig. 441s a view along the lines M of Fig, 47. Fig. 45 shows the inside thumb turn. Fig. 46 is a sectional view of the knob, while Fig. 47 is a view of the knob sleeve. Figs. 48 and 49 show a partial sectional side view and an end view o! the inside rose. Fig. 50'is a sectional view along li'nes 59-50 of Fig. 46 taken with the thumb turn therein. Fig. 51 illustrates the tongue secured to the inside thumb turn, while Fig. 52 is an assembly member.

Fig, 53 shows the inside plate assembled relatively to the outside rose and knob. Fig. 54 is an assembly view of the inside knob. Figs. 55 and 56 are views taken along lines 55--55 of Fig. 53 showing the method of assembling the inside rose relatively to its supporting plate.

Fig. 57 illustrates the operation of the spindle by the cylinder carried in the outside knob. Fig. 58 is a partial section of the cylinder assembly, while Fig. 59 is an end view oi parts of the same.

Figs. 58a and 58h are views of the essential parts Figs.

of Fig, 58 in different operating positions. 59a and 59h are views similar to Fig. 59 showing the parts thereof in positions corresponding to those of Figs. 58a and 58h.A Figs. 60, 60a and 60h show the parts along the lines Gli-40 of Fig. 58 in the positions corresponding to Figs. 58, 58a and 58h respectively. Fig. 61 is an assembly oi' the lock mechanism showing the parts of Fig. 57 in a diiierent position. Figs. 62 and 63 illustrate two positions of the parts along the lines 62-62 of Fig. 6l. Figs. 64 and 65 illustrate the assembly or removal of the cylinder relatively to the outside rose. Fig. 66 is a front view of the outside knob shown in Figs. 64 and 65. Fig. 67 is a view illustrating the operation of the cylinder releasing means.

Referring now more particularly to the drawings, and especially to Figs. 145, reference numeral I0 indicates the latch bolt which. together with an auxiliary latch bolt II, is mounted in latch assembly tube I2. Reference numeral I3 indicates the outside knob, and reference numeral I4 indicates the inside knob. A iinger piece or thumb turn I5 is utilized for controlling the outside knob in a manner to be indicated later on. The inside rose is indicated by reference numeral I6, while the outside rose is designated by reference numeral I1, the two parts being held together by means oi' a plate 82 and a pair of screws II.

In Fig. 4 there is illustrated the front plate 2l of the latch bolt housing I2 and its relation to the latch bolt Il and auxiliary latch I I. In Fig. 5 the relation of the latch bolt Il and the auxiliary latch bolt II to a strike 2| is more clearly shown. In Figs. 2 and 3, the relation oi' the thumb turn Il to the inside knob Il and the relation of a pin tumbler cylinder |05 and its key plug |98 to the outside knob Il are also clearly shown. As is well understood by those skilled in the art, the front plate is a decorative plate secured by screws 24 to the non-decorative rear plate 20a.

In Fig. 6 I show the parts of my invention in assembled relation. At this time, I will refer only to Fig. 6 for the purpose of illustrating the relation of the spindle 25 and its rollback member 28 relatively to the bolt retracting portion 21 through which the rollback 26 is adapted to retract the latch bolt I0. In Fig. 8 I illustrate the latch bolt l0 projected and the rollback 26 held in its normal neutral position by shoulder members 28 on the latch retracting portion 21 of the latch bolt I0. In Fig. 9 I illustrate just how the latch bolt is retracted by operation of the rollback 26 against the members 28. It will be noted that the spindle 25 is keyed as atV 29 to the rollback 26, this being quite well shown in Figs. 8 and 9. The latch bolt body is designated by reference numeral 38 in Fig. 12 and has slidably mounted thereon the latch retracting portion 21. The relation of these parts is well illustrated in Figs. 6, 10. and l2.

The rollback 26 is mounted in slidable relation to the portion 21 of the latch bolt so that the portion 21 may be moved to coact with the rollback in the position it is set by the particular position of the spindle 25. The rollback 26 is retained against axial movement on the spindle 25 and relatively to the portions 21 and 30 by the cooperation of its cam portion 26a with one side of the members 21 and 38, and the cooperation of its abutment 3| with the other side of the members 21 and 30. The member 21 is telescoped about member 30 and is slidable relative thereto by means of the screw threaded connection 32 of member 3l) with the screw 33, the screw 33 being secured against longitudinal movement relatively to the body 21 by the plate 34. It is quite apparent that rotation of screw 33 by means of its head 33a will adjust the member 21 and its lugs 28 relatively to the bolt body 30 so as to bring the lugs 28 into cooperation with the cam portion 26a of the rollback 26 in any position which that cam may occupy as required by the particular backset of the spindle 25 and the inside and outside knobs.

Referring now to Figs. 10, 11, and 12, the housing tube l2 of the latch bolt assembly is maintained by tongues 35 in assembled relation to the non-decorative front plate 20a which, in turn, is secured relatively to the decorative front plate 20. An end plate 36 is entered into tube l2 through slots 31 and 38a and is positioned therein as in Fig. 11. A relatively strong spring 38 operates between the end plate 36 and the wall 39 integral with the bolt body portion 30 and serves to maintain the plate 36 in the position illustrated in Fig. ll. This spring also serves to maintain the bolt body 30 projected relatively to the end plate 36, as is also readily apparent.

A pin 40 is mounted in the end plate 36 and supports thereon a tube 4I secured to the latch bolt I0, a spring 42 being mounted about the pin 4D and adapted to project the latch bolt I0 outwardly relatively to the main bolt body 30 and relatively to the end plate 36. This spring 42 is relatively light, as compared to the spring 38, so that the bolt l0 may be readily pushed inwardly relatively to the bolt body 38, a relatively strong effort being required to retract the entire body 30 and latch bolt I0 against the spring 38. It should be indicated at this point that the latch bolt I8 is connected for retraction with the latch bolt body 38 by means of a plate 56 secured by tangs 51 and 58 to the body 38 and the latch bolt I0, as is seen in Fig. 11.

A deadlocking lever 43, best shown in Figs. 14 and 15, has a tang 444 entered into a slot 45 in the end plate 36 whereby it may be retained relatively to the end plate. Also, the lever 43 has a further protruding portion 46 which rests under one of the end coils of spring 38, as illustrated in Fig. 11, so that it may be urged inV a clockwise direction relatively to the plate 36 and so that its detent locking portion 41 may normally be entered into a notch 48 in the latch bolt I0. For operating this deadlocking lever 43 to permit retraction of bolt I0 through its body 30, and for withdrawing the detent portion 41 from the notch 48, I utilize a cam face 49 on the latch bolt body 30, this cam face cooperating with a surface 49a on the lever 43 for camming that lever in a counter clockwise direciton against the force of the spring 38 when the latch bolt body 30 is retracted by the rollback 26.

For further controlling the deadlocking lever 43, I utilize an auxiliary bolt Il, best shown in Figs. 16 and 17. This auxiliary .bolt has a portion 5I operating in a bearing in the latch bolt l0. It is projected in an outward direction by a spring 52 mounted about a pin 53 secured in the hole 54 0f the latchbolt body 30 (Fig. 13). A lug 55 thereon coacts with the surface 41a of the lever 43 to maintain the lever 43 out of the notch 48, except when the auxiliary bot is in the position of Fig. 5.

The operation of the latch bolt assembly is as follows. auxiliary latch bolt occupying its position of Fig. 10, which is the position of the parts with the door open, any slight force on the latch bolt l0 will retract the same against its spring 42, and this movement will be effective also to retract the auxiliary bolt Il. It will be evident that the lug 55 on the auxiliary latch Il, by acting on the under surface 41a of the detent 43, has maintained the same in an upward position and out 0f deadlocking relation to the latch bolt l0 to permit this retraction. Should the door carrying the latch bolt I8 move to a locked position, illustrated in Fig. 5, the latch bolt l0 and the auxiliary latch l I will move to their relative positions illustrated in Fig. 5.

The lug 55 will then not be in a position to prevent the deadlocking lever 43 from deadlocking.

the latch bolt I 0. and the latch bolt l0 will be deadlocked against jimmying action. If, however, in the condition of the parts illustrated, the rollback 26 be operated, its cam portion 26a will operate against one of the lugs 28, thus moving the latch body 30 rearwardly as seen in Fig. 11. 'I'his will first cause the cam portion 49 of the latch body to act against the under surface 49a ofthe leverr43, moving the detent portion 41 out of notch 48 in the latch bolt I0. It will be noted in Fig. 11 that there is a spaced relation between the end surface of the detent portion 41 of the lever 43 and the end surface of the notch 48, thus allowing a slight retraction of the latch bolt I0 before the end surface of the notch 48 comes against the detent portion 41. The slight movement thus permitted allows the cam portion 49 to move the lever 43 from deadlocking position, after which the latch body 30 and the bolt l0 may be retracted as a unit.

xReferring now to Figs. 23 and 24, 25 and 26 the spindle member 25 is shown as slotted at 6U through its length so that it may be keyed through key 6I (Fig. 44) to the sleeve portion 14a of the With the latch bolt I0 projected and the.

inside knob I l, as is best illustrated in Fig. '1. 'I'he spindle 25 is slotted further at Ola for the admission of a lock operated cam or lug to be described later. The slot 6Ia also guides the controlling portion 62 of la control assembly which includes the member 62 and a sleeve 63. The member 62 is secured against endwise separation from the sleeve 63 by a tang 64 integral with the sleeve 63 and punched downwardly into the recess a of the member 62 when the two are joined, as shown in Fig. 22.

The sleeve 63 is housed within the hollow spindle and is moved axially relativelyto the spindle 25 by means of its pin 65 operating in a cam groove 66 in the spindle 25. The end` surface of the sleeve 63 is formed as is best shown in Fig. 2l, with a slot 61 in which a tongue piece 66 (Fig. 51) secured to the inside thumb turn I5 is adapted to rest. 'I'he spindle 25 is further equipped with a pair of bored holes 69, and rounded portions 10a, for a purpose to be described later.

'Ihe outside knob I3 is best shown in Figs. 29 and 30, in Fig. the cylinder lock therein being shown in phantom. The sleeve I3a of the knob is perforated as at 19 for a purpose to be indicated later on. At 1I, the knob sleeve is formed with a pair of recesses, the purpose of which will also be explained later on. The knob I3 is adapted for support in the outside rose I1 and is maintained against axial movement relatively to this rose by a sliding detent member 12 resting in a groove 13 of the knob sleeve, as is best shown in Fig. 28. The spindle 25 is adapted to be inserted into the knob I3 through the cylinder opening of the knob until the shouldered portion 14 of the spindle abuts the shoulder 15 in the knob sleeve. In this way the knob is so mounted with relation to the spindle that it may be rotated relatively to the spindle 25, but is not movable en dwise relatively to said spindle. This is helpful in the assembly of the lock.

The rose I1 has a pair of recesses 16, best shown in Fig. 34, into which a pair of balls 11 may ride to lock the knob relatively to the rose when the balls are partially propelled outwardly from the knob sleeve through holes 10 therein. This operation of the balls 11 is accomplished by the member 62 which is movable endwise relatively to the spindle 25 by its sleeve 63 through pin 65 operating in the spindle cam groove 66. Movement is transmitted to the sleeve 63 by the tongue member 69 rotatable by the iinger piece I5. It is quite obvious that rotation of the nger piece I5 will rotate the sleeve 63 which will cause its pin 65 riding in the groove 66 to move the sleeve 63 axially in the spindle 25, and from the position of Fig. 27 to the position of Fig. 28. The member 62 will be restrained from this rotation, being guided in the groove 6 la of the spindle 25, but it will move axially with the sleeve 63. In so moving, it will force the balls 11 from the position of Fig. 2'7 to the position of Fig. 28, and will lock the knob to the rose I1.

As was indicated previously, the knob sleeve is equipped with a pair of recesses 1I. With these recesses cooperate the locking balls 19 which are actuated by a cam portion 90 of the member 62. 'Ihese balls are mounted so that when the member 62 and its cam portion 99 are in the position of Fig. 27, the balls 'I9 will be maintained, by a further portion 8| of the member 62, partially within the recesses 1I of the knob sleeve and partially within the spindle holes 60. When, however, the member 62 is moved to the position of Fig. 28, the balls 19 will drop out of the recesses 1l into the position indicated in Fig. 28. It will be understood that when the balls 19 are in their position illustrated in Figs. 32 and 27, the knob spindle is locked to-the knob, and the knob will rotate with the spindle. The balls 11, it will be recalled. will be in a position to permit this rotion of the knob I3. With the parts in the position of Fig. 28, the spindle will be free relatively to the knob, and it. will be remembered that the knob will be locked relatively to its rose by balls 11. In this position of the parts, the spindle may be rotated freely of the locked knob I3 by rotation of the inside knob I4, as has been explained already.

The outside knob I3 must naturally not be secured to the door by any means which may be accessible. I utilize a rather unique method of securing the outside knob to the door and for maintaining the entire lock assembly on the door. The outside rose I1 is equipped with extensions I1a, each oi which is screw threaded as at 90. Cooperating with extensions I1a and the screw threads 90 are a pair of screws 6I, best illustrated in Fig. 53, which act to secure to the outside rose I1 the inside plate member 92, in a manner best illustrated in Fig. 53. For spacing this plate member 62 relatively to the door I may employ a washer member 93', shown in Fig. 37. Referring now to Figs. 38-42 inclusive, the plate member 62 is equipped with a series of lugs 93 adapted to form a bayonet joint with the inside rose, as will be explained later. The plate 62 is further equipped with a pair of cutaway portions Il which cooperate with lugs of the washer member 63.

In addition, the plate 62 has a spring pressed latch member 96 outwardly pressed by a spring 91 and limited in its outward movement by a pin I6 cooperating with the slotted portion 69 thereof.

In Fig. 53 I illustrate the mounting oi the inside plate relatively to the door and the rose I1, and I show in phantom lines the application of the inside rose I6 to this plate. In Fig. 55 the plate is shown assembled relatively to the outside rose by the screws 9|, and the inside rose I6 is shown just as it is snapped over the plate 62 and just as it has pressed the latch member 86 inwardly. The rose I6 is equipped with a series of inside lugs 90 and a slotted portion 9i. When first inserted over the plate 82, the lugs 90 and the slot 9| are spaced relatively to the projections 93 and the latch 86, as illustrated in Fig. 55. However, when the rose member is rotated approximately forty-tive degrees, the lugs 90 will interlock with the projections B3 in the manner of a bayonet joint, and the latch member 96 will have entered the slot 9|. Thereafter, it will be impossible to separate the inside rose I6 from its bayonet joint connection with the plate 92 unless a tool is utilized which depresses the latch 66, whereupon a retractive rotation of fortyiive degrees will once more bring the parts into the position of Fig. for endwise separation.

Referring now to Figs. 45-48, I show my inside knob Il screw threaded for ready assembly with its sleeve Ila, the detent member 92 being utilized to hold the inside knob and sleeve assembled to the rose I6, as will be quite apparent.

The tongue piece 66 is pinned at 93 to the inside finger piece or thumb turn I5. The finger piece itself is drilled at 94, a spring 95 and a ball 96 being arranged to maintain it in one of two ninety-degree positions with the ball 96 in the slot 91 or in the slot 96. The construction is such that the ball 96 will maintain the ringer piece I5 in 'the particular position in which it may have -been placed relatively to the knob I4, so that the finger piece, knob, tongue 80, `sleeve 83, and the spindle 25 will all rotate together. Incidentally, it may be well to indicate that spring ring 88 operating in the cooperating grooves and IOI of the finger piece and knob respectively maintains the finger piece against endwise movement relatively to the knob.

It will be recalled that the spindle 25 is adapted to be released from any connection with the outside knob I3 when the outside knob is locked by the operation of the finger piece or thumb turn I5. In this relation of the parts, the outside knob and cylinder will occupy a position relatively to the sleeve 25, which is best illustrated in Fig. 61. Should it now be required to operate the spindle 25 from the outside to retract the latch bolt I0, some means of connection between the cylinder and the spindle will be required. I prefer to use a rather unique type of pin tumbler cylinder mechanism which is best illustrated in Figs. 57-60b, inclusive.

My cylinder preferably embodies a general assembly member |05 of the type having a driver bearing portion |06 and a plug bore portion |01 in which a key plug |08 is mounted for rotation. I could, of course, use merely a self contained tumbler plug if I so desired. For retaining the plug |08 against separation from the cylinder |05, I utilize a pin member |08 operating in a groove IIO of the plug: The end of the plug |08 is bored out as at III for housing the cylindrical portion II2 of a cam member |I3 having a rectangular cam lug II4. Integral with the cam II3 is a pin II5 which is adapted to rest in a short groove II6 in a sleeve-like extension Ilia of the cylinder member |05, and is guided by a further carn groove |I1 in a sleeve member II8 which is mounted about the end of the plug |08 and between the plug and the extension IIBa of the cylinder. As is probably best shown in Figs. 58 and 67, the sleeve member II8 has an integral lug II9 formed thereon to cooperate with a slot I I 9a in the end of the plug |08 so that the sleeve may rotate with the plug but may move axially relatively thereto in two directions.

The initial position of the aforementioned parts of the cylinder lock assembly is shown in Figs. 58, 59, and 80. The pin I5 is positioned in the groove IIIS of the cylinder extension IIIa and in the closed end of the cam groove'III of the sleeve 'II8, while the rectangular cam lug ||4 is entirely retracted and is in the horizontal position of Fig. 59. The position of the parts after slight movement of the plug is illustrated in Figs. 58a, 59a, and 60a. Integral rotation of the sleeve ||8 with the plug |08 has caused the cam groove II1 to move the pin I5 outwardly from the groove IIG. This has caused an endwise movement of the lug I I4 to a point where it may enter the slot B Ia in the spindle 25, the spindle being shown in phantom in Fig. 60a. The lug III is still in a horizontal position as shown in Fig. 59a. Further rotation of the plug |08 will cause the cam groove I I'I to move the pin I I5 to the position illustrated in Fig. 60h, thus rotating the pin II5 together with the cam II3 and lug II4 to the position of Fig, 59h, which movement will be effective to rotate the spindle in a latch retracting direction. Fig. 57 illustrates a rotated position of the spindle 25.

The operation of the parts just described may be summarized as follows: Rotation of the plug |08 by a key will act through the sleeve II8 to move the pin I|5 until it reaches the end of the slot IIS in the cylinder sleeve extension IIBa. Thereafter, continued rotation will cause the cam groove II1 to rotate the pin I|5 and therefore the cam lug III from the position of Figs. 59a and 60a to the position of Figs. 59h and 60h, which rotation will rotate the spindle, which will have been contacted by lug II4 during its initial movement from the position of Fig. 60.

The construction of my cylinder lock is such that not only does it cooperate with the spindle .of my lock in a unique and novel manner, but it becomes a readily removable and insertible cylinder, which may be readily removed and inserted without use of tools or other appliances. My cylinder |05 has a bayonet joint connection with the outside knob I3. As best illustrated in Figs. 29 and 66, the outside knob I3 is formed with a circumferential lip |20 which is cut away at point I2 I. This cutaway portion |2I is substantially the shape of the driver portion |08 of my cylinder, so that when the cylinder is placed with the portion |06 opposite the cutaway portion I2I, the cylinder ma'y enter the knob as is illustrated in Fig. 65. Once the cylinder is fully inserted, it may be rotated, as shown by arrows 66a and 66h, so as to form a bayonet joint with the knob in a manner best illustrated in Fig. 64, and with a shoulder portion |060. of the driver section |06 against a solid portion of the lip |20.

For preventing rotation of the cylinder |05 to realign the driver portion |06 with the cutaway portion I2I of the lip |20 (shown by arrows 66a), I utilize a spring pressed pin member |22 urged outwardly from the cylinder by a spring |23, but retained against full outward movement by a pin |24. The normal position of the pin |22 is best illustrated in Fig. 58. With the bayonet joint made between the shoulder I06a and the lip for retaining the cylinder, the pin |22 will jump into a cutaway sector |25 in the knob I3 and will thereafter prevent the cylinder from rotating relatively to the knob, which rotation it will be recalled, is required to break the bayonet joint connection between the knob and cylinder. A further function of member |22 is to keep the cylinder |05 from rattling in the knob.

It will be recalled that upon rotation of the key plug |08 and the cylinder II8, the cam lug member Ill is compelled to move outwardly by coaction of the pin |I5 with the groove II1 of the sleeve II8, Referring to Fig. 58, it will be noticed that the sleeve II 8 may move inwardly relatively to the sleeve-like extension I |50, of the cylinder |05. It will be readily appreciated that when the pin ||5 and member I|4 are held xed against endwise movement, rotation of the sleeve I|8 by the plug |08 relatively to fixed pin II5 will cause the sleeve II8 to ride to the left from its position of Fig. 58. In so moving, it must move the pin |22 against the pressure of spring |23. For obtaining this retractive movement of the sleeve I8, it is merely necessary to rotate the inner knob so as to move the slot Gla from the position of Fig. 62 where it is opposite the lug Ill, to the position of Figs. 61 and 63 where it is at right angles to the lug II4. Thereafter, rotation of the key plug |08 can not in Figs. 61 and 63 move the lug ||4 and pin I|5 in an endwise direction. Rotation of the plug |08 must therefore cause a rearward movement of the sleeve II8, which movement is well illustrated in Figs. 64 and 67, wherein the pin |22 is shown moving out of its sector- |25. With the parts in the position of Fig. 64, it is very simple to rotate the cylinder to the position of Fig. 65 and remove the same outwardly from the knob Il.

Having now described the operation of a preferred embodiment of my invention, I claim:

l. In a lock, a rollback, a spindle for operating said rollback, an outside knob mounted freely relatively to said spindle, means operable for connecting and disconnecting said outside knob from said spindle, a key actuated element carried by said outside knob and rotatable relatively to said knob, and means whereby said element when rotated first moves endwise to engage said spindle and then rotates said spindle independently of said outside knob.

2. In a lock, a rollback, a spindle for operating said rollback, an inside knob fixed to said spindie, an outside knob mounted freely of said spindle, means carried by said inside knob for connecting and disconnecting said outside knob from said spindle, a key actuated lock in said outside knob, having a rotatable key plug and a cam juxtaposed relatively to the end surface of said spindle and adapted to engage and rotate said spindle, and means whereby key rotation of said plug moves said cam into engagement with the spindle while continued rotation of said key plug rotates said cam and spindle independently of said outside knob.

3. In a lock, a rollback, a hollow spindle for operating said rollback, an inside knob secured to said spindle for operating the rollback, an outside knob having a key operated lock therein, said outside knob and lock being both freely mounted relatively to said spindle, means operated by key operation of the lock for rotating said spindle independently of said outside knob, means movable in said hollow spindle for connecting said outside knob to said spindle, a iinger piece carried by said inside knob, and means of connection between said nnger piece and said means movable in said hollow spindle.

4. In a lock, a rollback, a spindle, an inside knob secured to said spindle for rotating the same, an outside knob having a key operated locking element therein, said knob and locking be both freely mounted relatively to :Lieglgfndlejh rose on which said outside knob is mounted, a-pair of ball members adapted to lock and release said outside knob relatively to said rose, a second pair of ball members adapted to lock and release said outside knob relatively to said spindle, means in said spindle adapted to actuate said ball members to lock the outside knob to the rose while releasing it from the spindle, or to release the outside knob from the rose while locking it to the spindle, a finger operated piece carried by said inside knob for operating said means, and means actuated by key operation of said locking element for rotating the spindle regardless of the condition of said outside knob. 5. In a lock, a spindle, a rollback actuated by said spindle, an outside rose, an outside knob mounted in said rose, detent means arranged between said rose and outside knob for locking said outside knob to said rose, said detent means extending down into the spindle when said outside knob is free from said rose, detent means between said spindle and outside knob for locking the outside knob to the spindle and adapted to lie in said spindle when said outside knob is free therefrom, a member mounted in said spindle and adapted for movement relatively thereto, said member having means for actuating said detent means to release the outside knob from its rose while 4locking it to the spindle, and for locking the outside knob to the rose whole releasing it from the spindle.

6. In a lock, a spindle, a rollback actuated by said spindle, an inside knob secured to said spindle for rotating the same', an outside rose, an outside knob mounted in said rose, detent means arranged between said rose and outside knob for locking said outside knob to said rose, said detent means extending down into operating relation with the spindle when said outside knob is free from said rose, detent means between said spindle and outside knob for locking the outside knob to the spindle and adapted to lie in said spindle when said outside knob is free therefrom, a member mounted in said spindle and adapted for movement relatively thereto, means whereby said member actuates said detent means to release the outside knob from its rose while locking it to the spindle, and locks the outside knob to the rose while releasing it from the spindle, means on said inside knob for operating said member. said member being rotatable with said spindle and inside knob during normal rollback operating movement of said inside knob.

7. In a lock, a spindle, a rollback actuated by said spindle, an outside rose, an outside knob mounted in said rose, detent means arranged between said rose and outside knob for locking said outside knob to said rose, said detent means extending down into the spindle when said outside knob is free from said rose, detent means between said spindle and outside knob for locking the outside knob to the spindle and adapted to lie in said spindle when said outside knob is free therefrom, a member mounted for movement in said spindle and adapted for movement relatively thereto, said member having means for actuating said detent means to release the outside knob from its rose while locking it to the spindle, and for locking the outside knob to the rose while releasing it from the spindle, and a key operated lock carried by said outside knob for operating said spindle when said outside knob is locked to its rose but is released from the spindle.

8. In a lock, a rollback, a hollow spindle for rotating said rollback, an inside knob for rotating said spindle, an outside knob mounted freely relatively to said spindle, a slide member in said spindle, means on said inside knob movable relatively to said knob for moving said slide member, and ball members movable by said slide into and out oi' aligned openings of said outside knob and spindle to secure said knob to said spindle.

9. In a lock, a rollback, a hollow spindle for rotating said rollback, an inside knob for rotating said spindle, an outside knob mounted freely relatively to said spindle, a slide member in said spindle, means on said inside knob movable relatively to said knob for moving said slide member, an outside rose relatively to which said outside knob rotates, aligned openings between said rose and knob, aligned openings between said knob and spindle, and ball locking members adapted to lock said spindle to said knob and said knob to said rose through proper positioning in said aligned openings, and means on said slide member for so positioning said balls as required.

10. In a lock of the class described, a latch bolt, means for retracting said latch bolt, an inside knob operatively connected at all times to said means for retracting said latch bolt, an

v outside knob, a finger piece on said inside knob,

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and means actuated by said finger piece whereby to render said outside knob operative and inoperative to retract said latch bolt, a cylinder lock mounted on said outside knob, a cam carried by said cylinder lock and normally held in a neutral position relatively to said outside knob whereby it is inoperative to actuate said means for retracting the latch bolt when rotated with said outside knob, and means whereby key operation of said cylinder lock moves said cam relatively to said outside knob and retracts said latch bolt independently of said outside knob.

11. In a lock, a rollback, a hollow spindle for rotating said rollback, an inside knob for rotating said spindle, an outside rose, an outside knob rotatable relatively to said rose for operating said spindle, a slide member in said spindle, means on said inside knob movable relatively to said knobfor moving said slide member, and ball members movable by said slide member into and out of aligned openings of said outside knob and rose to secure said knob to said rose.

12. In a lock, a rollback, a hollow spindle for rotating said rollback, an inside knob for rotating said spindle, an outside knob for rotating said spindle, a slide member in said spindle, means on said inside knob movable relatively to said knob for moving said slide member, and ball members movable by said slide member int'o and out of openings of said outside knob to secure said knob against rotation..

13. In a lock, a rollback, a hollow spindle for rotating said rollback, an inside knob for rotating said spindle, an outside knob mounted freely whereby to rotate said spindle and to operate said rollback independently of said outside knob and said detent means securing the outside knob to said spindle.

14. In a lock, a rollback, a, spindle, an inside knob secured to said spindle for rotating the same, an outside knob having a key operated locking element therein, said knob and locking element being both freely mounted relatively to said spindle, a rose on which said outside knob is mounted, a pair of ball members adapted to lock and release said outside knob relatively to said rose, a second pair of ball members adapted to lock and release said outside knob relatively to said spindle, means in said spindle adapted to actuate said ball members to lock the outside knob to the rose while releasing it from the spindle, or to release the outside knob from the rose while locking it to the spindle, and a nger operated piece carried by said inside knob for operating said means.

KARL A. BRAUNING. 

